Mobile title over image

Add to Shop Page Setings > Advanced > Header

<style>
  @media screen and (max-width:640px) {
  .ProductList-overlay {
    opacity: 1;
    display: -moz-box;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(219,87,31,.79);
    color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-transition: opacity .3s ease-in;
    -moz-transition: opacity .3s ease-in;
    -ms-transition: opacity .3s ease-in;
    transition: opacity .3s ease-in;
    z-index: 3;
}
  .ProductList-overlay * {
    color: white !important;
    font-size: 15px !important;
}
  }
</style>